hamahama vs 푸리
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
hamahama
This app uses AI to accurately track your focused study time, automatically pausing when you're away from your desk. It generates study timelapses, provides detailed statistics, and allows you to compete with friends in study groups.
- AI-measured focused study time
- Automatic timer pausing
- Study timelapse generation
- Detailed study statistics
- Daily study goals
- Friend group competition
- Zoom study sessions
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hamahama: the AI timer that measures your real Lock-in time, so you can compete honestly with friends. The time the stopwatch kept running while you were in the bathroom. The time you scrolled your phone with the timer app open. You tell yourself it was an hour, but you really locked in for half of that. hamahama was built to end that lie. 1. Real Lock-in time, measured by AI - Using your camera, AI checks that you're actually locked in at your desk and counts only the time that's real. - Doze off, pick up your phone, or leave your seat, and the timer stops. - No need to hit pause yourself. The AI handles it. 2. A Lock-in planner that fills itself - Your Lock-in sessions are logged automatically in a 10-minute-block planner. Your day gets organized without writing a thing. - Tap a record to change the subject, or manually add sessions the AI couldn't measure. 3. Lock-in stats - See your Lock-in time and focus rate by day, week, and month, and compare with yesterday, last week, and last month. - Focus rate: shows what % of the time you sat down was real Lock-in time, and where your focus rate ranks among all users. - An hourly graph shows when you stay focused the longest. - Tap a date on the monthly calendar to jump straight to that day's record. - Lock-in streak: grows with every consecutive day you lock in for 10+ minutes. - See how much time you've put into each subject. 4. Weekly timetable - Set a recurring Lock-in schedule for each day of the week, with subjects. 5. Daily goal - Set today's Lock-in goal and see your progress right on the home screen. - If you forget to lock in, a reminder will nudge you first. 6. Lock-in timelapse - When you finish, today's Lock-in session is automatically turned into a timelapse video. - Your Lock-in timer is burned into the video, so you can watch your hours add up. - Videos are kept in the in-app vault for 3 days, and you can save them to Photos or share straight to Instagram. - Videos are created only on your phone. They are never stored on our servers. 7. Compete with friends on real Lock-in time - Create a private group with friends using an invite code, or find and join public groups of people preparing for the same exam through search and categories. - Group rankings are based only on AI-measured Lock-in time. Manually added time doesn't count. - Compare daily, weekly, and monthly rankings, your Lock-in time over the last 7 days, and the group average, all on one screen. - See who has put in how much today, and who's locking in right now. - Get notified when a friend in your group starts locking in. 8. Lock in together on cam - Pick a group from home and jump right in, or create a temporary room and invite friends. - Check yourself with a camera preview before you join. - Feel like you're sitting side by side in a quiet library, while AI measures each person's real Lock-in time. - Toggle your mic on/off and switch cameras smoothly. 9. Lock in solo, too - One tap to start from home, and AI measures your real Lock-in time automatically, even in solo mode. - Perfect for keeping promises to yourself at a café or at home. --- Recommended for - Anyone tired of stopwatch timers that let you fool yourself - Anyone who wants to answer "How focused was I today?" with real numbers - Anyone who wants a planner but finds writing everything down a hassle - Anyone who wants to keep a video record of a hard-working day - Students who want to compare real Lock-in time with friends - Exam takers who want to keep pace with others preparing for the same test through groups and cam sessions - Anyone who keeps reaching for their phone at a café or at home --- - Get started in 5 seconds with your Apple, Google, or Kakao account - All features are free - For questions, go to [Settings > Contact Us] in the app - Website: https://studyhama.com Only real Lock-in time. Together.
푸리
This app analyzes your step-by-step solutions to past college entrance exam math problems using AI. It identifies not just incorrect answers but also the specific reasoning errors you made, helping you understand why you got it wrong.
- AI analysis of solution steps
- Identifies reasoning errors
- Automatic grading of multiple-choice and short-answer questions
- Automatic error notebook creation
- Practice past exam papers
- iPad pen support
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해설을 보면 알겠는데, 혼자 다시 풀면 또 막히나요? 푸리는 정답이 아니라 내가 쓴 풀이를 읽는 AI 수학 과외쌤이에요. 기출이나 내 문제집을 노트 앱에 풀듯이 풀면, 채점부터 풀이 첨삭까지 한 번에 이어져요. 먼저 써 본 학생들의 앱스토어 리뷰예요. "계산 실수부터 얻어갈 만한 발상까지 알려주어 도움이 됩니다." "제 풀이를 기반으로 분석해 줘서 좋아요." "내 풀이 인식도 잘 해주고, 분석도 깔끔해서 좋은 것 같네요." ■ 답이 아니라 풀이를 봐요 답만 맞춰 보면 어디서 틀렸는지 모른 채 넘어가요. 푸리는 내가 종이에 쓴 식과 풀이 흐름을 읽고, 어느 줄에서 방향이 갈렸는지 짚어 줘요. 맞게 간 부분은 먼저 인정하고, 다음에 해볼 한 걸음만 제안해요. 예) "교점을 구하는 식은 맞았어요. 이번엔 P의 접선 기울기를 2t로 놓아볼까요?" 정답을 통째로 보여주지 않아서, 남은 풀이는 내 힘으로 끝낼 수 있어요. ■ 맞힌 문제도 한 번 더 확인해요 감으로 맞힌 문제는 시험장에서 다시 틀리기 쉬워요. 맞힌 풀이에도 개념을 확인하는 질문을 하나 던져요. 예) "속도가 0이면, 운동 방향도 꼭 바뀔까요?" ■ 내 문제집도 그대로, PDF로 가져와요 학원 교재, 시중 문제집, 학교 프린트까지 PDF라면 무엇이든 가져와 펜으로 풀어요. 파일 앱에서 고르거나, 메신저로 받은 PDF를 공유하기로 보내거나, AirDrop과 끌어다 놓기로 넣으면 끝이에요. 두꺼운 교재 합본도 올릴 수 있어요. 가져온 문제지는 표지와 함께 내 문제지 서가에 쌓이고, 풀던 곳부터 바로 이어서 풀어요. ■ 평가원 기출과 학력평가 56회분이 들어 있어요 수능과 6월, 9월 모의평가 17회분(2022~2027학년도), 고1 학력평가 21회분, 고2 학력평가 18회분을 따로 받을 필요 없이 바로 열어요. 학년 칩으로 고르고 학년도별 서가에서 찾아요. 인쇄하지 않고 시험지 위에 그대로 쓰고 지우며 풀어요. ■ 채점은 제출하면 끝 답을 적고 제출하면 자동으로 채점해요. 답지 넘겨 가며 번호 맞춰 볼 필요 없이, 맞힌 문제와 틀린 문제를 한눈에 보고 궁금한 문제는 바로 분석으로 넘어가요. ■ 내가 푼 순서대로 다시 돌려봐요 풀이 리플레이로 내가 쓴 과정을 처음부터 다시 볼 수 있어요. 분석이 짚은 줄에서 그때 무슨 생각으로 식을 세웠는지 복기해 보세요. ■ 틀린 문제는 오답노트에 모여요 틀린 문제, 분석한 문제, 다시 맞힌 문제로 나눠서 모아 줘요. 채점 뒤에 다시 풀면 새 회차로 쌓여서 처음 풀이와 다시 푼 풀이가 섞이지 않아요. 내 문제지에서 틀린 문제도 기출과 함께 오답노트에 올라가요. ■ 종이처럼 편하게 쓰는 필기 만년필과 볼펜, 형광펜, 지우개, 올가미를 갖췄어요. 굵기는 1부터 100까지, 지우개 크기도 원하는 대로 골라요. 두 손가락으로 확대하면 좁은 여백에도 작은 글씨로 또박또박 쓸 수 있어요. 이런 학생에게 추천해요. • iPad와 Apple Pencil로 수능 수학을 준비하는 고3, N수생 • 고1, 고2 학력평가로 모의고사를 준비하는 학생 • 학원 교재나 문제집을 PDF로 가지고 있는 학생 • 해설은 이해되는데 혼자 풀면 어디서 막히는지 모르는 학생 • 채점만 하고 끝내지 않고, 내 풀이를 돌아보며 다시 풀고 싶은 학생 앱 안에 광고가 없어요. 공부에만 집중하세요. 오늘 푼 문제, 푸리에서 복기해요. 이용약관(EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 개인정보처리방침: https://api.mirinae.app/privacy
Screenshots
Verdict
The clearest difference is update cadence: 푸리 at every 3 days against hamahama's every 3 weeks. On price, review sentiment, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
hamahama ships an update every 3 weeks, 푸리 every 3 days. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | hamahama | 푸리 |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 85.2% of reviews — better | 80.0% of reviews |
| Update frequency | Every 3 weeks | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 15.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 32 MB | 138 MB |
| Age rating | 4+ | 4+ |
| Developer | sangwon kwon | Hwan Kim |
Customer experience
hamahama
푸리
In-app purchases
hamahama
No in-app purchases
푸리
No in-app purchases









